The InVS and the IRSN have conducted an assessment of the French population’s medical exposure to ionizing radiation over the past 20 years. Recently published, the report notes a moderate decline in conventional X-ray examinations overall, an increasing use of CT scans, and a decrease in the use of X-ray examinations with contrast media. From a public health surveillance perspective, the available data on the distribution of different types of examinations and associated doses are limited. The InVS and the IRSN recommend the establishment of a sustainable information system on patients’ medical exposure to ionizing radiation. (R.A.)